761 Add or Divide Like Instructions

Field definition and scope:

Field 761 contains information necessary to construct a classification number by adding numbers from other parts of a schedule or from a table, or by basing it on numbers defined in other parts of a schedule (dividing it the way numbers in other parts of the schedule are divided).

Field 761 is repeatable.

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, and designator repeatability, see table below:

Position	Description	Repeatability
Field 761	Add or Divide Like Instructions	R
Indicator:
First	Undefined; contains a blank

Second	Combined note types
0	Not a combined note
1	Add or divide like portion of a combined note
2	Class elsewhere portion of a combined note
3	Relocation portion of a combined note

Subfield code:
$a	Number where instructions are found - single number or beginning number of span	R
$b	Base number	NR
$c	Classification number - ending number of span	R
$d	Divided like number	R
$e	Example class number	R
$f	Facet designator	R
$i	Explanatory text	R
$n	Negative example class number	R
$r	Root number	R
$t	Topic	R
$x	Other classification number	R
$y	Table sequence number for internal subarrangement or add table	R
$z	Table identification	R
$6	Linkage	NR
$8	Field link and sequence number	NR

Scheme-specific conventions:

Library of Congress Classification

Dewey Decimal Classification

Content designator history:

Subfield $t - Topic [new, 2008]

Subfield $y - Table sequence number for internal subarrangement or add table [new, 2008]